Trying to maintain a single temperature throughout the entire home makes no sense; Each room has bizarre requirements. In our home, there are rooms with big windows that are exposed to afternoon sunlight. Those spaces tend to heat up & think warmer than the rest of the house! With a single thermostat, there is no way to focus a/c to those rooms in the summer time & back off the oil furnace in the winter. It would also be nice to avoid heating & cooling empty rooms to the ideal temperature. My home is over 3 thoUnited Statesnd square feet. There are guest study rooms that never get used. I’d like to keep our home gym & master study room much cooler than the rest of the house. In the summer, when I use the oven, it would be helpful to set a lower temperature in the family room. With an replace to zone control, I could significantly improve comfort! Plus, there’s the choice to lower weekly utility bills. Less wear & tear on the oil furnace & a/c reduces the chance of malfunction & extends the lifespan of the equipment. The extreme weather in our local section requires either heating or cooling just about year round & adds up to about fifty percent of our energy expenses. I’ve looked into it & I can have a series of valves installed into the ductwork to regulate airflow. The addition of thermostats in each room would allow customized settings by way of an app on our iphone. This would be super convenient, easy & helpful. I have busy an quote for installing zone control with a local Heating & Air Conditioning contractor.